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WATCH: Sir Mix-A-Lot performs 'Baby Got Back' with Seattle Symphony

Not many orchestra performances can be called "booty-shaking," but the Seattle Symphony is willing to take on that challenge.

Friday night, rapper Sir Mix-A-Lot joined the orchestra onstage to perform two of his biggest hits. After finishing "Posse on Broadway," Mix invited about 40 women to to take the stage and shake it to "Baby Got Back."